Field of view calculator

A super simple way to calculate the mathematically accurate field of view (FoV) for your racing simulator, based on monitor size and viewing distance.

Why do this? Watch this video by Empty Box for an explanation. Basically it's so things in the game look the same size as they would in real life, allowing you to judge distances better.

Top view: horizontal FoV; side view: vertical FoV. Thick red bar represents monitor.

Distance to screen
Screen size and shape

Note: screen size is measured diagonally.

If you need to use larger numbers, you can type them into the input boxes and the calculations will still be correct.

Made by Andy F, aka /u/caerphoto on Reddit.